Chart VS-3000-175SC-S100 — 3,000L Vertical LNG Storage Tank

What is the current vacuum reading, and what is the NER?

The listing does not provide current vacuum readings or NER (normal evaporation rate) data. Request recent vacuum performance metrics and evaporation rate testing from the seller, as these are critical for assessing vacuum jacket integrity on a cryogenic tank that was inspected but not located during the recent survey. On LNG vertical tanks of this type, acceptable vacuum levels typically run 50 microns or better, and NER is generally expressed as a percentage of capacity per day.

What product has it held, and what can it be converted to?

This unit is designated for LNG-only service and the listing indicates it has held LNG. Chart's LNG-specific tanks use materials and welding procedures qualified exclusively for methane service and cannot be converted to other cryogens; the vessel code stamp and design certification restrict it to LNG unless completely re-built and re-stamped under new ASME Section VIII calculations.

Is the data plate legible, and is the U-1A available?

The listing does not confirm data plate condition or U-1A availability, and the note that the unit was inspected but not located during recent survey raises questions about physical access and documentation status. Request verification that the ASME data plate is intact and legible, and that the original U-1A manufacturer's data report is on file—both are required for jurisdictional acceptance and any future inspection or re-rating work.

What is involved in relocating and re-commissioning it?

Vertical cryogenic tanks of this size typically require a specialized cryogenic rigger, a vacuum-rated transport frame or cradle to prevent jacket damage, and nitrogen purge during transit. Re-commissioning involves vacuum integrity verification, pressure testing per the original code of construction, relief valve recertification or replacement, and jurisdictional inspection in the receiving state—though the condition note that this unit was not located during recent survey suggests you should confirm its physical presence and accessibility before planning any relocation.